A102141
formatted as a simple table:
n
a(n)
0
4
1
6
2
7
3
15
4
25
5
51
6
126
7
171
8
311
9
358
10
865
11
1850
12
3311
13
4686
[4,6,7,15,25,51,126,171,311,358,865,1850,3311, 4686]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
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